Package org.jline.utils

Class Colors

java.lang.Object

org.jline.utils.Colors

public class Colors
extends Object

Utility class for color-related operations and definitions.

The Colors class provides utility methods and constants for working with colors in terminal applications. It includes color palettes, color name mappings, and methods for color parsing and conversion.

This class defines standard color palettes for different terminal color modes:

• 8 standard ANSI colors
• 256-color indexed palette
• Named color mappings (e.g., "red", "blue", "navy")

It also provides methods for parsing color specifications in various formats, such as RGB hex codes, CSS-style color names, and indexed color references. These utilities help with consistent color handling across different terminal types and color capabilities.

Field Summary

Fields

Modifier and Type	Field	Description
static final double[]	AdobeRGB_environment	Adobe RGB environment
static final double[]	averageSurrounding	Average surrounding for CAM color spaces
static final int	C	Chroma
static final double[]	D50	D50 illuminant for CAM color spaces
static final double[]	D65	D65 illuminant for CAM color spaces
static final double[]	darkSurrounding	Dark surrounding for CAM color spaces
static final int[]	DEFAULT_COLORS_256	Default 256 colors palette
static final int[]	DEFAULT_COLORS_88	Default 88 colors palette
static final double[]	dimSurrounding	Dim surrounding for CAM color spaces
static final int	h	Hue
static final int	H	Hue Composition / Hue Quadrature
static final int	J	Lightness
static final int	M	Colorfulness
static final int	Q	Brightness
static final int	s	Saturation
static final double[]	sRGB_encoding_environment	sRGB encoding environment
static final double[]	sRGB_typical_environment	sRGB typical environment

Constructor Summary

Constructors

Constructor	Description
Colors()

Method Summary

Modifier and Type	Method	Description
static double[]	CAT02toHPE(double[] RGB)
static double[]	rgb2cielab(double[] rgb)
static int	rgbColor(int col)
static Integer	rgbColor(String name)
static int	roundColor(int col, int max)
static int	roundColor(int col, int max, String dist)
static int	roundRgbColor(int r, int g, int b, int max)
static void	setRgbColors(int[] colors)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

DEFAULT_COLORS_256

public static final int[] DEFAULT_COLORS_256

Default 256 colors palette

DEFAULT_COLORS_88

public static final int[] DEFAULT_COLORS_88

Default 88 colors palette

D50

public static final double[] D50

D50 illuminant for CAM color spaces

D65

public static final double[] D65

D65 illuminant for CAM color spaces

averageSurrounding

public static final double[] averageSurrounding

Average surrounding for CAM color spaces

dimSurrounding

public static final double[] dimSurrounding

Dim surrounding for CAM color spaces

darkSurrounding

public static final double[] darkSurrounding

Dark surrounding for CAM color spaces

sRGB_encoding_environment

public static final double[] sRGB_encoding_environment

sRGB encoding environment

sRGB_typical_environment

public static final double[] sRGB_typical_environment

sRGB typical environment

AdobeRGB_environment

public static final double[] AdobeRGB_environment

Adobe RGB environment

J

public static final int J

Lightness

See Also:

• Constant Field Values

Q

public static final int Q

Brightness

See Also:

• Constant Field Values

C

public static final int C

Chroma

See Also:

• Constant Field Values

M

public static final int M

Colorfulness

See Also:

• Constant Field Values

s

public static final int s

Saturation

See Also:

• Constant Field Values

H

public static final int H

Hue Composition / Hue Quadrature

See Also:

• Constant Field Values

h

public static final int h

Hue

See Also:

• Constant Field Values

Constructor Details

Colors

public Colors()

Method Details

setRgbColors

public static void setRgbColors(int[] colors)

rgbColor

public static int rgbColor(int col)

rgbColor

public static Integer rgbColor(String name)

roundColor

public static int roundColor(int col,
 int max)

roundColor

public static int roundColor(int col,
 int max,
 String dist)

roundRgbColor

public static int roundRgbColor(int r,
 int g,
 int b,
 int max)

CAT02toHPE

public static double[] CAT02toHPE(double[] RGB)

rgb2cielab

public static double[] rgb2cielab(double[] rgb)